Pipe coupling



J. MARCO PIPE GOUPLING l Aug. '23, 1949.

5 Shee't-s-Sheet 1 Filed lay 1, 1946 Y v INVENToR.

LTO/60V MA C' 0 v BY A f A roawf ys J. MARCO PIPE COUPLING lfmlg.4 23,1949.

Filed lay 1 194e 3 Sheets-Sheet 2 INVEN TOR.

ck//v MAH ca Aug. 23, 1949. J. MARCO 2,479,580

PIPE COUPLING Filed May 1, 1946 3 Sheets-Sheet 5 INVENTOR. Jay/ V MARCO,

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Patented Aug. 23, 1949 a v2,479,580A

This invention relates to pipe couplings and more particularly to a coupling for connecting pipes forming parts of food processing machines and in which the pipes must not only be iirmly held connected with each other, but also permitted to be readilydisengaged and thoroughly cleansed.

Another object o! the invention is to so form the coupling that sections thereof may be very easily secured and released without the use of a wrench or other tool.

Another object of theinvention is to provide a coupling wherein threads are eliminated and Y crevices in which dirt may accumulate. reduced to a minimum. Another object ofltheinvention is to provide the coupling with pipe-engaging sections havingj l collars or flanges ilrmly held to'feach other by a clamping ring so lformedthatii; vmay be disposed f about the collars andtighte ed to hold the col#- Y 20 that theymay be readily takenapart for thorlars pressed firmly against each other.

Another obiect of the investie' is to so'formtiie clamping ring-that when it is tightened, an anl nular rib oi one angewillbe forced into a groove in the other ilange and a iluidtight joint formed; Another object` of the invention is to provide the ring with'companion sections for engaging' a coupling of verysimple construction which is easy to operate and so formed that .the pipes connected by thecoupling may be disposed at various angles to eachother.

The invention is illustrated in the aocompanying drawings wherein:

Figure 1 is a sectional view showing pipes con-v nected by means oi! the improved coupling and disposedat an angle of 90 to each other.

Figure 1, portions being in elevation.

Figure 3 is a fragmentary sectional view taken along line 3 3 of Figure 2. p y

Figure 4 is a sectional view taken along line I-l of Figure 2.

Figure 5 is a view showing onemember oi' the v clamping ring partially in side elevation and partially in longitudinal section.

Figure 6 is an 'edge view of the ring section.

3 Claims.V (Cl. 285-4129) Figure 'I isa longitudinal sectional view showing pipes at an angle o! 45 and connected by a Irnodined form of coupling.

Figure 8 is a transverse sectional view taken alongline I-l of Figure '1.

Figure 9 is a view showing pipes disposed at 'an' angie oi' 180 and connected bya coupling of the improvedconstruction.

Figure 10 is a view showing pipes connected by 1 0 av coupling .of modified construction and disposed at an angle of`.

Figure 11 is a view showing pipes connected by A-another modined form of coupling.

Figure 12 is a longitudinal sectional view taken l5 lalongline I2-I2 of Figure 11.V

` 'I 'he pipes I and 2 are prtionsoi pipes which niayconstitute elements of a: homogenizing machine, or'other machine, 'including pipes which mustbel verytightly connected but so connected ve-ular relation to each otherat various angles as l "shown in the drawings. ,.AThesepipes are connected 4bv, a coupling'for'med 'of-companion secy tions, each o! which has ,a sleeve l surrounded at Aits inner end by a diagonallyv disposed annular vilange or collar l. These ilanges havev bevelled marginal edge faces 1 so that when the collars of the two sections l and I are in face to face contact with each other, they forni a structure V-shaped in cross section at the meeting inner ends of the 'coupling sections. Thecoliar or ilange of the section i'carries an annular rib l which is V-shaped in cross section and protrudes l' i'rom its nat inner face concentric to the flange I and fthe collar or ilange o! the section I has its inner face formed with an annular groove I constituting a seat to receive the annular rib 40 8. Side faces of the rib l have close contacting a nuidtight joint will be formed. The angle of the side faces of the rib with respect to the angle v of the side walls ofthe groove are such thatwhen Figure 2 is a view taken along line 2-2 ofV leakage. Since the collars or iianges and the rib and the groove into which it nts are circular.

the two sections vmay be turned from the position of Figure 1 in'which the sleeves 6 extend at an angle of towards the position of Figure 9 wherein the sleeves are at an angle `oi! to 55 each other and the connected pipes I and 2 disposed in alignment. The pipes I and 2 are firmly secured in the sleeves 5 by brazing or welding and cannot slip longitudinally through the sleeves or have turning movement therein. After the pipes have been nrmly secured in the sleeves, portions of the pipes which may protrude from inner ends of the sleeves, will be cut ofi! and ground to dispose ends of the pipes flush with inner faces of the flanges or collars.

, In order tol secure the two sections 3 and 4 together with the rib 8 forced into the groove 9. there has been provided a clamping ring consisting of companion sections I9 and II. These sections are formed of strong metal and each is arcuate longitudinally and substantially V- shaped in cross section so that they may straddle peripheral portions of the flanges 6 and 1 with their side walls in ontact with the bevelled surfaces 1 of the flanges. The ring section I IJ has ears I2 and I3 at its ends and the ring section I I has similar ears I4 and I5 at its ends. Referring to Figures 2 and 4 it will .be seen that the ears I3 and I'5 are formed with openings I6 and I1 to receive a bolt I8 having its head I9 engaged in the seat of the ear I5. This bolt carries a spherical nut 2| which rests in a seat formed by the thickened end portion of ear I3, and from an inspection of Figure 2, it will be seen that since the enlarged end portion 22 of the ear I3 is rounded in cross section, the clamp section I0 may have rocking movement relative to clamp section II and the clamp sections be moved into closel fitting engagement with margins of the flanges. The ears I2 and I`4 are thick and formed with transversely extending channels or seats 23 and 24, constituting seats to receive ends of a link 25 and a lever 26, the lever lbeing formed near one end with an opening 21 to loosely receive the link. This inner end of the lever terminates in a rounded end surface 28 Ato engage in seat 24 and the outer end of the lever may also be rounded. It should also be noted that the link is curved longitudinally and since the link is formed of. resilient metal, it will have a spring action and apply tension to the clamp sections I0 and II when the link is engaged about lugs I2 and I4 and the lever swung inwardly against section II. By adjusting the nut 2I, pull, exerted by the link, will be regulated and side walls of these clamp sections caused to exert desired .binding action against the lbeveleld faces of the flange 6. When the sections 3 and 4 of the coupling are to be released, so that the pipes I andA 2 may be removed for cleansing, it is merely necessary to swing the lever 26 away from the clamp section II' and the link may then be disengaged from the ears I2 and I4 and the clamp sections then swung apart andmoved out of engagement with the flanges. The two sections 3 and 4 will then be completely released and the pipes may be lifted out of place, cleaned and reassembled.

The coupling illustrated in Figures '7 and 8 is similar to that described, but the sections 28 and 29 have their sleeves 39 and 3l formed with collars or flanges 32 and 33 which have fiat inner faces and their outer side faces so curved transversely that the flanges taper towards their peripheral edges. When the clamping ring formed of sections 34 and 35 is applied and tightened, the walls of the ring sections have wedging engagement with the sloping outer side faces of the flanges and the anges are forced toward each other so that the annular rib 36 oi' flange 33 will be forced into the annular groove 31 'of flange 32 and a tight joint formed between coupling each have a sleeve 48 formed with an annular flange or collar 49 about its inner end. These flanges are encircled by a clamping ring similar in construction to those already described, but the inner side faces of both flanges are'fiat instead of one being formed with an annular rib and the other with an annular groove to receive the rib. A tight joint is formed by inserting a gasket 5I between the inner side facesl of the fianges, the gasket being formed of cornpresslble material so that when the ring is tightened, the gasket will be compresed and a tight joint formed. Inner and outer bushings 52 and 53 are fitted within the sleeves 43 and the outer end portion of the sleeve is inwardly thickened to form an annular shoulder 54 for engagement by the outstanding annular shoulder 55 of bushing 53. By selecting bushings of the proper thickness, pipes of different diameters may be thrust into the sleeves and have snug fit therein.

Figures l1 and 12 illustrate another modified form of coupling wherein the two coupling sections 56 and 51 are provided with sleeves 58 and 59 carrying outstanding annular flanges 69 and 6I. The flanges have bevelled outer side faces for engagement by the diagonally disposed side walls of the sections 62 and 63 of a clamping ring and the section 56 of the coupling is formed at its inner end with a bevelled extension 64 for bearing against the bevelled surface 65 formed on the inner end of the coupling section 51. In- Wardly extending annular shoulders 66 and 51 are formed at inner ends of the two coupler sections forming abutments for the inner opposed sections which are fitted within and brazed to the sleeves 58 and 59. The clamping ring is similar in construction to those previously described and has its sections 62 and 63 formed with ears 68 and 69 to receive a bolt 10 carrying a spherical nut 1 I, the other ends of these ring sections being formed with ears 12 and 13 about which ts the link 14 of the lever 15. It should be noted, however, that the ear 12 is formed with inner and outer recesses forming seats 16 so that the link may be moved longitudinally of the ear 12 to adjusted positions, thus controlling the pressure exerted by the link.

In all forms of the coupling illustrated and described. the coupling sections may be connected or released and when the clamping rings are tightened, a joint will be formed which is exceptionally tight and positively leak-proof. Wrenches, pliers, or other tools are obviously unnecessary when connecting or disconnecting the coupling sections and when the pipe sections are separated they may be thoroughly cleansed and sterilized, and readily assembled at various angles.

It will be seen from the foregoing description that I have provided a comparatively simple, inexpensive and eiiicient means for carrying out the various objects of the invention and while I have described the elements best adapted to perform the functions set forth, it is apparent The sections 46 and 41 of this that various changes in form, proportion and in the minor details oi' construction may be resorted to, without departing from the spirit or sacrificing any of the principles of the invention. Having thus described ,the invention, what is claimed is:

1. A vpipe coupling comprising companion sections each having a pipe-receiving sleeve and a.

collar about the inner end of its sleeve, the collars having confronting inner side faces and bevelled outer side faces converging towards outer marginal edges of the collars, a clamping ring for engaging about said collars formed of circumferentially extending sections V-shaped in cross section for wedging engagement with the bevelled outer surfaces of the collars, outstanding ears at ends of the ring sections, a bolt passing through one set of ears and carrying a, spherical nut constituting a fulcrum permitting rocking of the ring sections to opened and closed positions, and a link or resilient material for engaging about the other set of ears carrying at one end a loosely mounted lever for engaging the adjacent ear and forcing the ring sections into clamping engagement with the collars when the lever is swung inwardly to a pressure exerting position.

2. A pipe 'coupling comprising companion sections each having a pipe-receiving sleeve and a collar about the inner end oi.' its sleeve, the collars having confronting inner side faces and bevelled outer side faces converging towards outer marginal edges of the collars, one ring section having its inner side face formed with an annular groove V-shaped in cross section,` the other ring section having its inner side face formed with an annular rib V-shaped in cross ysection for engaging in 'the groove of the rst collar,

a clamping ring for surrounding said collars 4o lars, a bolt passing through one set of ears and mounting the ring sections for movement towards and away from each other, and a clamp for engaging about theapther set of ears and exerting pressure thereon to force the ring sections into binding engagement with the collars.

3. A pipe coupling comprising companion sections each having a pipe-receiving sleeve and an outstanding annular collar about its inner end, said collars being disposed diagonally of their companion sleeves and having fiat inner side faces, the inner side face of one collar being formed 'with an annular groove and the inner side face of the other collar being formed with an annular rib for engaging in the groove, a ring for encircling peripheral portions of said collars formed of circumferential sections V-shaped in cross section for forcing the collars towards each other to form a sealed joint when the ring is tightened, a member adjustably holding said ring sections in pivotal connection with each other, ears extending from said ring sections at opposite ends thereof from the pivotal connection, and a clamp for engaging about said ears and forcing the ring sections into tight binding engagement with the collars.

JOHN MARCO.

REFERENCES CITED The following references are of record in the ille of this patent:

UNITED STATES PATENTS 

